Hrm question

imtrying22

hi,
I've recently purchased a polar ft7 and I'm wanting to know how reliable they are.

It say
Duration 2.23.53
my average hr was 101
Maximum 138
Fat burn 2.20.24
Fitness 3.22

It says I burnt 502kcal
What is kcal?
Could I enter in mfp and make my own excercise and say I burnt 500calories??
Thanks for any help

SLLRunner

I've had mine for over a year and I love it. It's been accurate for me.

You can't sync it with MFP, but you can create your own exercise.